perfsonar development work

[Roman Lapacz <>]

Loukik Kudarimoti wrote:
> Roman Lapacz wrote:
> > Loukik Kudarimoti wrote:
> > > Roman Lapacz wrote:
> > > > I would recommend putting the information about the unit in the 
> > > > key, for example:
> > > This could be ok but it cannot be a substitution for the presence of 
> > > units in datum which is returned. I mean, we could have it here but 
> > > at the same time in datum as well. Describing the units of the 
> > > numerics passed back, as Vedrin suggests, is essential in my opinion.
> >
> > This is the place where the information about units can be stored. 
> > The service will use it to put it in responses. This is my proposal 
> > how to include unit info.
> Ok. Good idea. I like it.  I thought you were suggesting to provide 
> information about units in the key instead of the datum. I 
> misunderstood. Thanks for the clarification.

Implemented. Available in SVN (trunk).



Example of metadata configuration file:

<nmwg:store >

   <nmwg:metadata id="meta1">
       ....
   </nmwg:metadata>

   <nmwg:data id="data1" metadataIdRef="meta1">
       <nmwg:key>
           <nmwg:parameters>
               <nmwg:parameter 
name="file">/rrd/test/test.rrd</nmwg:parameter>
               <nmwg:parameter name="dataSource">ds0</nmwg:parameter>
               <nmwg:parameter name="unit">bps</nmwg:parameter>
           </nmwg:parameters>
       </nmwg:key>
   </nmwg:data>

</nmwg:store>




Example of response if the unit is specified in the key:


<nmwg:message>
  <nmwg:metadata id="meta1">
     ....
  </nmwg:metadata>
  <nmwg:data id="localhost.27b055c9:10cf803512a:-7fde" 
metadataIdRef="meta1">
     <nmwg:datum timeValue="1121558400" value="189.25857952114652" 
valueUnits="bps" />
     <nmwg:datum timeValue="1121644800" value="157.6300922870065" 
valueUnits="bps" />
     <nmwg:datum timeValue="1121731200" value="341.2686134412051" 
valueUnits="bps" />
     <nmwg:datum timeValue="1121817600" value="376.50555043698813" 
valueUnits="bps" />
     <nmwg:datum timeValue="1121904000" value="320.4919869209144" 
valueUnits="bps" />
  </nmwg:data>
</nmwg:message>



Example of response if the unit is not specified in the key:

<nmwg:message>
  <nmwg:metadata id="meta1">
     ....
  </nmwg:metadata>
  <nmwg:data id="localhost.-3e0ab627:10cf7f78557:-7fdf" 
metadataIdRef="meta1">
     <nmwg:datum timeValue="1121558400" value="189.25857952114652" 
valueUnits="unknown" />
     <nmwg:datum timeValue="1121644800" value="157.6300922870065" 
valueUnits="unknown" />
     <nmwg:datum timeValue="1121731200" value="341.2686134412051" 
valueUnits="unknown" />
     <nmwg:datum timeValue="1121817600" value="376.50555043698813" 
valueUnits="unknown" />
     <nmwg:datum timeValue="1121904000" value="320.4919869209144" 
valueUnits="unknown" />
  </nmwg:data>
</nmwg:message>



Roman








> Loukik.
> > Roman
> >
> >
> >
> > > Loukik.
> > > > <nmwg:store>
> > > >
> > > >    <nmwg:metadata id="meta1">
> > > >        ....
> > > >    </nmwg:metadata>
> > > >
> > > >    <nmwg:data id="data1" metadataIdRef="meta1">
> > > >        <nmwg:key>
> > > >            <nmwg:parameters>
> > > >                <nmwg:parameter name="file">/test.rrd</nmwg:parameter>
> > > >                <nmwg:parameter name="dataSource">ps0</nmwg:parameter>
> > > >                <nmwg:parameter name="unit">bps</nmwg:parameter>
> > > >            </nmwg:parameters>
> > > >        </nmwg:key>
> > > >    </nmwg:data>
> > > >
> > > > </nmwg:store>
> > > >
> > > >
> > > >
> > > > Roman
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Loukik Kudarimoti wrote:
> > > > > [forgot to cc perfsonar-dev]
> > > > >
> > > > > ------------------------------------------------------------------------ 
> > > > >
> > > > >
> > > > > Subject:
> > > > > units expected from RRD MA
> > > > > From:
> > > > > Loukik Kudarimoti 
> > > > > <>
> > > > > Date:
> > > > > Thu, 10 Aug 2006 11:58:25 +0100
> > > > > To:
> > > > > Vedrin Jeliazkov 
> > > > > <>
> > > > >
> > > > > To:
> > > > > Vedrin Jeliazkov 
> > > > > <>
> > > > > CC:
> > > > > Andreas Hanemann <>, Roman Lapcz 
> > > > > <>
> > > > >
> > > > >
> > > > > Hi Vedrin and Andreas,
> > > > >
> > > > > I have a query about the units that you assume you are getting 
> > > > > from RRD MA. Basically, the response from RRD MA is as below:
> > > > >
> > > > >
> > > > >  <nmwg:data id="localhost.7e5caec1:10cf76b6c9d:-7fdf" 
> > > > > metadataIdRef="meta1">
> > > > >     <nmwg:datum timeValue="1121558400" value="189.25857952114652" />
> > > > >     <nmwg:datum timeValue="1121644800" value="157.6300922870065" />
> > > > >     <nmwg:datum timeValue="1121731200" value="341.2686134412051" />
> > > > >     <nmwg:datum timeValue="1121817600" value="376.50555043698813" />
> > > > >     <nmwg:datum timeValue="1121904000" value="320.4919869209144" />
> > > > >  </nmwg:data>
> > > > >
> > > > >
> > > > > It doesn't say whether the value is in bits per second, Mbits per 
> > > > > second or bytes per second. What do you assume the unit to be in? 
> > > > > do you think it would be better if the response explicitly 
> > > > > mentioned the units and also the timeType?
> > > > >
> > > > > Thanks,
> > > > > Loukik.